Elevator conveyer



an m, 1923. 1,470,663

R. K. BARNETT ELEVATOR CONVEYER Filed Sept. 9, 1920 2 Sheets-Sheet 1 //vi/E/VTOR ROBERT M. 5A HNETT.

Oct 16 I923.

R. K. BARNETT ELEVATOR YCONVEYER Filed sa 9,

1920 2 Sheets-Sheet 3 STATES EOBER'I KNOX' BARNETT, OF YHILADELPHIA,PENNSYLVANIA,

EIJEVATOR CONVEYER.

Application filed september a, 1920. Serial no." 409,045.

To all whom it mayconoermn Be it known that 1,. ROB RT KNOX BAB- NETT, acitizen of the United States, residing in Philadelphia, Pennsylvania,have invented Elevator Conveyers, 'of which the following is aspecification.

This invention relates to elevating conveyers which include automaticdevices for causin discharge or delivery of the articles carried, arelativelysimp'le, and substantial means whereby the contents of a tray,bucket or other conveying element shall be caused to (shifted by saidelements to permit of their passage and thereafter automatically, re-

turned to their normal positions in which they can receive the contentsof the convey ing elements, if these should be'discharged.

Another object of my invention is. to provide novel means for trippingthe conveying elements or load carriers of an elevator conveyer,together with a novel form and mounting of receiving structure for thearticles delivered from said carr1ers;the 1nvention contemplating-also anoveldevice in which,

for controlling from a distance the action of the tri ping means.

These'o jects and other advantageous ends I attain as hereinafter setforth, reference being had to the accompanying drawings,

Figs. 1 and 2 are respectively a vertical section and a front elevationto some extent diagrammatic, illustrating an elevator conveyer made inaccordance with my invention;

fin accordance with my inventionaand Fig. 5 is, a diagrammatic yiew ofamodiq" "i' ficationof my invention, illustrating a com;

pingcams from'a distance.

binatioli of part-s fo controlling the trip f one of my objects being toprovide Fig. '3 is a horizontal section on the line 33, Fi'g. 1; v

l'Big. 4'is a perspective View on" a scale .larger than that of Figs. 1to 3, illustrating the detail construction of one of the conveying traysand areceiving trough with (-ertainlof their associated parts,constructed In the above drawings, 11 represent two parallel endlesschains which are suspended from and actuated by a pair of sprocketwheels 22 mounted on a shaft 3 driven from an electric motor t or othersuitable source of ower. Said sprockets with the motor an theirassociated parts are preferably mounted on-a frame work 5 at the top orupper part of the building or other structure in which the elevator ismounted, and in the present instance I have shown such a-structure ashaving three floors 6, 7 and 8. I

Adjacent the lowest floor the chains 1-.-1 pass around two sets of idlersprockets or guide pulleys 9 andlQ' whereby their direction is changedfrom vertical to horizontal,

and there is also an adjustable pair of bottom sprockets 11 for one endof the horizontal runs of the two chains. counted on and carried by thetwo chains 11 are a suitable number of conveying elements 12 in the formof trays, buckets or carriers pivot'ally supported so as to be capableof being swung out of their normal positions and caused to dischargetheir contents. I

A loading platform 13 or equivalent structure is arranged over the upperof the horizontal runs of the chainl-l, and the elevator shaft or wellhas at opposite sides vertically extending tracks or guides 14 for thechains; Said shaft in addition is preferably provided with enclosingwalls 1 5-15 and a central vertically extending partition or frame 16whereby the two vertical runs of chain with their ascending anddescending carriers are separated and the said carriers incidentallyprevented from tipping except at such points as the walls and partitionsare or ma be cut away.

Each 0 the trays or conveying elements 12 is provided with a pairof'projecting members in the form of arms 17, extending in oppositedirectionsfrom each of its sides adjacent the. pivots connecting it toor suspending it from the two chains 1-1, andan one formof my inventionI provide pairs of tripping cams'18'which. may be bolted or otherwiserigidly fixed to the; guides14 ad- 'j'acent openings into the elevatorshaft,

whereby the projecting arms 17 of each tray arecngaged and the'latter'causedto swing on its pivots into such a position as to causefitsload to be -discharged by gravity. These pairs'of tripping cams 18are so positioned relative to the floors 6 or 7 and to theopenings inthewall of the elevator; shaft as topermit of the mounting under them onsaid floor a package or load-receiving platform 19 havin a receivingextension p-ivotally connecte -to it as by a shaft or spindle 21,. andextending into the elevator shaft or well in such position as to beengaged by the conve mg elements 12 as these move upwardly.

ach of said extensions 20 has-arms 22 projecting under the body of thereceiving platform 19 and normally engaging a pair of-abutments 23 soplaced as to normally hold the extension in :an inclined position withits top surfacewsubstantially in the plane of the rep or inclinedsurface of the body. of the receiving platform 19.- Said extensions arethus each free to be swung upwardly about their spindles 21..as aXes inorder 'to permit of the passageof successive conveyer elements orcarriers 12 without causing the latter to be swung on'their'piw ots.Springs 24 are connected between the arms 22 and the adjacent parts ofthe body "of the platform 19, so that after being dislaced from-theirnormal positions shown in Fig. 4, the platform extensions are returnedto and maintained in such positions.

The tripping cams of that pair which it is desired shall act upon'thecarriers to cause delivery of their contents at any particular i floorare arranged as shown in Flg. 4, at such positions on the guide tracks14 that each carrier is permitted to pass the adjacent extension 20before itsarms 17 are acted on by of the articles bei riers before the patform extension 20 has said cams. There will thus be no. possibilitydelivered from any carreturned into such a position as ,to receive thesame and permit of their sliding onto the main portion of the receivingplatform or chute 19., I

" In that form of my invention shown\ in block 27 pivoted to saidcasting ping arms 17' of the carriers or conveying elements. Holes areformed in each of sa'i castings 26 for the reception of a pin 25 whichmay be passed through either of two holes in its particular cam block toretain, it

either in position to engagethe carrier arms when this is desired, or toretain it in such I position that it will not engage said arms.

Under conditions of operation, thepair of chains with theirconiveyingelements or trays 12 are driven by the motor 4 and'artiple are deliver'cles to be convgg'ed to the floor 7 for examfrom the platform 13 ontosaid carriers as these are moved by said chains through their upperhorizontal falling into the elevator chute after delivrun. Upon reachingthe extension 20 of the first receiving platform which is located on thefloor 7, each carrier engages and I swings said extension up andoutwardly without being alfected thereby. Immediate- 1y after thepassageof said carrier, gravity and the springs 24 return the extensionto its normal position in which it projects into the elevator wellorcasingr Thereupon the arms 17 of the carrier come into engagement withthe blocks of the tripping cams18 adjacent the opening in the elevatorshaft and, by

swinging said carrier on'its supporting pivots, causes the articlethereon to be delivered first to the extension 20 and then to the re-.ceiving platform or chute 19 from which it.

falls onto the floor 7. M

After passing out of engagement with this first pair of tripping cams,the carrier resumes its normal position and c'ontiues to move upwardlywith the chains to which it is attached, thereafter similarly engagingand swinging theextension 20 of the receiving'platform 19- of the floor6. Inasmuch however as theblocks of the tripping cams adjacent thissecond receiving platform are intheir outer or inoperative positions,there is no swinging of the carrier on its p vots,

and after those portions of the chains to which it is attached pass overthe top sprockets 2 it moves downin the descending portion of theelevator shaft.

If'desired, chutes'or platforms 30 may be provided at each of'the floors6 and 7 ad'- jacent the descending run of the elevator so as to permitof articles being delivered to the carriers as they pass downwardlytherein andafterward conveyed to and discharged on some other floor bythe means above described.

I Under certain conditions I may provide means for controlling thepositions of the tripping'cams 18 from a distance, and for this purposeI mayemploy a tripping block.

connected to the movable core 31 of an electromagnetic winding orsolenoid 32-. (Fig. 5). I

By means of a spring 33 the tripping cam block is normally. maintainedout of the path of the carrier arms 17 but when by the energization of asuitable electric circuit connected to said winding, the latter isenergized, the core 31 is drawn. into such positlon asto project theblock, causing it to be struck by the arms 17 with a'resultin'g tippingor swinging of the carriers connecte thereto and the discharge of thearticle thereon.

By the above described arrangement of pa'rtsfnot onl am I enabled todetermine the 'point at w ich thenrticles carried by the conveyerelements shall be discharged, but by providing. the receiving platformsor chutes made as described, I prevent the possibility of any of thearticles accidentally ery from their treys and cause them to be tensionnormally projecting into the path discharged and finall come to rest atvsome of said elements and movable thereby to perdistance away from t eelevator. mit their passage; with a cam adjustable at 10 I claim:---will into and out of the path of movement 5 The combination in anelevator conveyer of said eonveying elements for tripping of e series ofpivotally mounted conveying them after the have assedsaid extension.

elements; a, receiving member having an ex- ROB RT N OX BARNETT.

